Gyratory crusher



R. BERNHARD. GYRATORY CRUSHER.

APPLICATION FILED MAY 2, I9I9.

1,336,015. Patented Apr. 6, v1920.

UNITED STATES PATENT OFFICE.

RICHARD BERNHARD, F ALLEN TOWN, PEN ENGINEERING & MFG- CO., 0F ALLENTO DELAWARE.

NSYLVANIA, ASSIGrN OR TO TI-IE TRAYLOR WN, PENNSYLVANIA, A CORPORATION 0F GYRAJTORY cRUsHER.

Specification. of Letters Patent.

Patented Apr. 6, 1920.

Application led May 2, 1919. Serial No. 294,254.

vide aconstruction in which the lower bear-` ing for the shaft will be self-alining and in which efficient means are provided for inclosing and lubricating the running parts, and further aims to provide improvements designed to increase the efficiency and durability of the crusher and render certain parts more accessible.

With these and other objects in view the invention includes the novel features of construction and arrangement and combination of parts hereinafter described and defined by the appended claims.

An embodiment of my invention is illustrated in the accompanying drawings in which:

Figure l is a sectional elevation, and

Fig. 2 is a similar sectional view showing a modified for/m.

Referring by reference characters to these drawings the numeral 1 designates the shaft of the crusher, which carries the crushing cone 2 designed to coact with the concaves 3 in the usual manner. .The shaft l may have its upper end suspended from and journaled in the supporting member 4 in any suitable manner, such supporting connection being so arranged as to permit the shaft to be adjusted vertically to vary the discharge opening between the cone and concaves. The lower end of the shaft is provided with a tapered portion or part la terminating in a substantially cylindrical portion 1b. Fitting over this part of the shaft is another or additional cylindric part which may be in the shape of a sleeve 5 which has a cylindrical portion 5b receiving the portion lb of the shaft and a liared upper end 5a receiving the tapered portion la of the shaft.

The sleeve projects beyond `the lower end of.- the shaft and is closed at its lower end, forming an oil chamber 5C, the extreme lower end being contracted and forming an annular external shoulder as indicated at 5d. Encircling the sleeve 5 is a rotatable eccenmetal 6a tric sleeve 6, which is provided with Babbitt in the usual or any desired manner. This eccentric is rotatably mounted in the bearing member 7 carried by the cylindrical member, or portion 8*1 of the crusher frame 8. The eccentric 6 projects above the sleeve 5 and is flared at its upper end to correspond to the taper of the portion 1a of `the shaft, and said upper end projects into an annular recess formed in the lower part of the crushing cone around the shaft a distance greater than the maximum amount of -vertical adjustment of the shaft, this arrangement effectually preventing the entrance of any grit between the eccentric and inner sleeve.

The upper end of the eccentric is rabbeted to form a portion 62 concentric with the shaft and encircling this portion and resting upon the shoulder formed thereby, and upon the upper end of bearing 7 is a floating grit excluding ring' 9 for preventing foreign material from entering between the eccentric and the bearing member 7.

Fast to the lower end of the eccentric is a bevel gear ring 10, which is driven by an intermeshing gear 1l fast on the end of drive shaft l2 journaled in -suitable bearings 13 in the Crusher frame, which shaft may have power imparted thereto in any suitable manner.

The sleeve 5 is keyed to the shaft 1\in any suitable manner as by a key (not shown) passing through keyway or slot 52, and the v portion 1b of the shaft is preferably slightly carry and effect the operation of the lubricating pump and to this end I detachably secure to said lower end a pump casing 14 in which are journaled the intermeshing gears 15 and 16 constituting a gear pump. The shaft 16a of gear 16 is located approximately in line with the axis of the shaft 1 and is projected through the bottom of the gear casing and is provided on its lower end with a gear 17 which meshes with a stationary gear ring or rack 18 carried by or formed integrally with the removable cover member 19. As the sleeve 5 and shaft l are held against rotary movement but are carried bodily around in a circular path with a gyratory movement, due to the action of the eccentric it will be seen that gear 17 is caused to roll around on gear ring or rack 18, thereby effecting the rotation of the pump gears.

The bottom of the gear casing is closed `by a removable core plate 20 which has an annular oil chamber 20a communicating:-

by flow and ret-urn ports a and a respectively with the oil chamber 21 directly beneath the pump and with the gear casing.

As the oil level in the system is main- -tained at approximately -the level of the bottom of the teeth of gear ring 1() it will be seen that the gear pump is always submerged and no priming is necessary. The oil passes to the pump gear chamber through opening 21a in the bottom thereof and is forced out by the operation of the pump through opening 21b into the space within the sleeve- 5 beneath the end of the shaft, rising to the top of thesleeve, except for the portion which passes through ports 5X to the interior of the eccentric f-or lubricating the inner face of the latter. The oil which overflows at the top of the sleeve 5 passes by ports 6x. to the annular channel 7X in the bearing 7, one of theseparts being preferably pro# vided with oil grooves as indicated at The oil which descends through the grooves to the bottom is thrown outward by centrifugal action over the gear 10, thereby keeping gears 10 and 11 thoroughly lubrilcated. From the channel 7X the surplus oil passes through port m to pipe'21, by which it is conveyed to an oil 'chamber 22,-encircling the bearing of shaft 12 for lubricating the latter through ports 13a. From this chamber the oil flows into the main gearchamber and thence by ports a before describedtothe core chamber 20a. Any sediment in the oil will be collected and retained in chamber 20a, the ports a being elevated above the bottom thereof. In order to make it possible to operate the crusher in either direction a double set of ports is provided, one set of which may be plugged up. v

Thevpump is readily accessible from below for cleaning and repair, it being only necessary for this purpose to remove the cap 19 when the bolts holding the pump casing to the bottom of the sleeve 5 maybe withdrawn and the pump casing with gears therein removed intact.

Inl some of the lighter forms ofl crushers I may omit the sleeve between the shaft and eccentric as shown in Fig. 2.

In this construction the pump casing 11X is secured directly tov the bottom of the f crusher shaft 1y and a vertical oil passage y is provided in the crusher shaft having transverse passages y leading to the eccentric bearing, and to the oil channel at the top, the construction remaining otherwise substantially the same.

I prefer to provide a branch passage y2 at the bottom forming with the main passage two ports leading to the pump casing, one or the other of which may be plugged up according to direction of rotation desired.

Having thusdescribed my invention what I claim is:

1. In a gyratory crusher the combination with the crusher frame and gyratory crusher shaft carrying a crushing cone, of an eccentric journaled in the frame and encircling the shaft below said cone, said cone having an annular recess in itslower-end adjacent the shaft into which the upper end of the eccentric extends. 1

2. In a gyratory crusher the combination with the crusher frame and crusher shaft carrying a crushing cone having an 'annular recess, of a cylindrical bearing member carried by said frame, a bearing sleeve withinA said bearing member, an eccentric between said sleeve and shaft and projecting above the upper end of said sleeve and into an annular recess in the bottom of the crushing cone, said eccentrichaving a concentric portion above said sleeve, and a floating ring encircling said concentric portion and resting on the upper end of said sleeve.

3. In a gyratorycrusher the combination with the crusher frame and crusher shaft, and said frame carrying a cylindrical part encircling the shaft, -of a bearing sleeve within said cylindrical part having an enlarged upper end resting on the top of said cylindrical part, said enlarged end having anannularlinternal oil channel, an eccentric rotatably mounted 'between the shaft and bearing sleeve 4and projecting above the latter Vand having an oi'l passage alining with said channel, means for forcing oil up between the eccentric and shaft to said channel, and means for withdrawing oil from said channel.

4. In a gyratory crusher the combination with the crusher frame and crusher shaft, and said frame carrying a cylindrical part encircling the shaft of a bearing sleeve within said cylindrical part having an enlarged upper end resting on the top of said cylindrical part, said enlarged end having an annular internal oil channel, an eccentric rotatably mounted between the shaft and bearing sleeve and projecting above the latiso A ter and having an oil passage alining with said channel, an oil pump beneath the lower end of said shaft and means whereby said pump is caused to move bodily in an eccentric path in unison with the eccentric movement of the shaft, for forcing oil upward to lubricate the eccentric and said channel.

5. In a gyratorycrusher the combination, with the gyratory shaft having at its lower end a cylindric part provided withoil passages and a rotatable eccentric encircling said cylindric part, of a lubricating device for the eccentric located beneath said cylindric part and comprising a pump casing connected with said part, to be moved bodily through an eccentric path in unison therewith, pump piston means within said casing, and means coacting with a stationary part of the crusher for causing said eccentric movement to actuate said piston means.

6.' In a gyratory crusher/the combination with the gyratory shaft and eccentric `of lubricating devices for the eccentric including a pump casing beneath the shaft and connected therewith to be moved in a gyratory path, a rotary pumping element in said casing having a shaft, projecting through the casing, a planetary gear on said projected shaft, and an annular stationary rack with which said planetary gear engages.

7 In a gyratory crusher the combination with the shaft and eccentric of lubricating devices for the eccentric including a pump casing beneath the* shaft and connected therewith, pump gears journaled in said casing, one of said gears having a shaft projecting through the casing, a planetary gear on said projected portion, and an annular stationary rack with which said gear engages.

8. In a gyratory crusher the combination with the shaft and eccentric having an operating gear at its lower end, of a gear casing surrounding said gear provided with a bottom closure, a gear pump casing beneath the lower end of the shaft and`removably connected therewith, pump gears in saidcasing, one of said gears having a shaft projected through the casing, a gear carried by said projected shaft, said bottom closure having an opening in line with said pump casing, and a removable cover for said opening having an annular rack with which said gear meshes.

9. In a gyratory crusher the combination with the shaft and eccentric, operating gears for the eccentric, of a gear casing for said gearing, a removable bottom closure for said casing having an annular oil collecting space and central chamber with ports in the walls thereof for conducting'oil from said collecting space to said central chamber, and an oil pump located in said central chamber and operated from said shaft.

and operated from said shaft, said centrall chamber having a removable cover for access to the pump.

11. In a gyratory crusher the combination with the crusher shaft and eccentric, of a sleeye interposed between the shaft and eccentric and keyed to the shaft and lubricating devices for the eccentric including a pump'operated from said sleeve.

Y 12. In a gyratory crusher the combination with a crusher shaft and eccentric, of a sleeve interposed between the shaft and eccentric and keyed to the shaft and lubricating devices for the eccentric includin` a gear pump having its casing detachably connected to the lower end ofv said sleeve.

13. In a gyratory crusher the combination with the eccentric and crusher shaft,

of a sleeve interposed between the shaft and including a pump casing detachably secured to the outer face of said closed lower end,-

pump gears in said casing, an external gear connected t-o one of said pump gears, and a stationary rack meshing with said eX- ternal gear.

15. In a gyratory crusher the combination with the frame having a tubular bearing portion, the eccentric rotatably mounted therein,' and the vertically adjustable shaft within the eccentric, of a sleeve interposed between the shaft and eccentric and having a slidable non-rotary connection with the eccentric, said sleeve having an annular external flange, and an annular internal flange on the eccentric engaging the annular fiange on the sleeve and supporting the latter.

16. In a gyratory crusher the combination with the frame having a tubular bearing portion, the eccentric rotatably mounted therein, 4and the vertically adjustable shaft within the eccentric, of 4a sleeve interposed between the shaft and eccentric and having a slidableY non-rotary connection with the 'between the shaft and eccentric and having a slidable non-rotary connection with the eccentric, means whereby said sleeve is supported by the eccentric, and lubricating means for the eccentric including a pump operated from said sleeve.

18.- In a gyra-tory Crusher the combina tion with the frame having a tubular bearing portion, the eccentricl rotatably mountedthereon, and the vertically adjustable shaft within'the eccentric, of a sleeve interposed between the shaft and eccentricrand having a slidable non-rotary connection with the eccentric, and lubricating means for the eccentric including a pump supported by the lower end of said sleeve.

19. In a gyratory-Jcrusher the combina# tion with the eccentric and shaft within the same, having a downwardly tapered portion terminating in a Ysubstantially cylindrical portion, of a sleeve between the shaft and eccentric having a slidable non-rotary connection with said cylindrical portion, said sleeve having a flaring portion corresponding to the taper of the shaft, and means whereby said sleeve is supported by the eccentric. i

20. In a gyratory Crusher the combinapart encircling the shaft, of a tion with the crusher frame and crusher shaft, and said frame carrying a cylindrical part encircling the-shaft, of a bearing sleeve Within said 4,cylindrical part having an enlarged upper end-resting on the top of the cylindrical part, said enlarged end having an annular internal -oil chamber, an eccentric rotatably mounted between the shaft and bearing sleeve and projecting above the latter and having an oil passage alining with said channel, said channel serving to lubricate the outer bearing of the eccentric,

means for forcing oil up between the ec` centric and shaft to said channel, and means for withdrawing surplus oil from said channel.

21. In a gyratory Crusher the combination with the crusher frame and crusher shaft, and said frame carryina cylindrical earing sleeve within'said cylindrical part having an enlarged upper end resting on the top of said cylindrical part, said enlarged end having an annular internal oil channel, an eccentric rotatably mounted between the shaft and bearing sleeve and projecting above the latter and having an oil passage alining with said channel, means for forcing oil up between the eccentric and shaft to said channel,- and an annular gear ring secured vto said eccentric at its lower end and receiving oil from the outer bearing of the eccentric, and means for withdrawing surplus oil from said channel.

In testimony whereof I aliix my signature.

RICHARD BERNHARD. 

